Finding the Fourth Proportional to 2,562.78, 3,842.13 and 1,330.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.78 : 3,842.13 = 1,330.38 : x
2. Step 2: Convert to fraction form
   2,562.78/3,842.13 = 1,330.38/x
3. Step 3: Cross multiply
   2,562.78x = 3,842.13 × 1,330.38
4. Step 4: Simplify right side
   2,562.78x = 5,111,492.91
5. Step 5: Solve for x
   x = 5,111,492.91/2,562.78
6. Step 6: Final answer
   x = 1,994.51